Const assertions provide immutability but lack semantic meaning. Learn how TypeScript's named tuples and readonly arrays combine to give you both type safety and self-documenting code.

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Named tuples with the readonly modifier in TypeScript combine immutability and semantic meaning for array structures. While const assertions provide immutability but lose context, and regular tuples offer structure without preventing mutations, readonly named tuples deliver both type safety and self-documenting code. The approach uses TypeScript 3.4's readonly modifier on tuple elements to create deeply immutable structures that maintain meaningful names for each element, making code more maintainable and preventing accidental modifications.

Bring Immutability and Context to Arrays